Slept in. Ate some fish, then went down into the caves to look for ore.
Discovered that right behind one of the walls I hadn’t tunneled all the way through was a second entrance into my cave area. Or rather, an entrance into a cave area that I didn’t know existed, since I dug all of my cave area out by hand.
(Arms are still sore from yesterday.)
So that might explain how some of the worst fauna is getting close to my living quarters.
It doesn’t explain the horror squid walking through walls though.